Interception with Ninject. Fails to load IProxyRequestFactory

c#, castle-dynamicproxy, ninject, ninject-extensions, ninject-interception

Solution

OK, I was finally able to reproduce (forgot to make the MyClass methods virtual). The way I solved it was by removing the using block from around the kernel:

    static void Main(string[] args)
    {
        MyClass o = null;

        var kernel = new StandardKernel();
        kernel.Bind<MyClass>().ToSelf().Intercept().With(new MyInterceptor());
        o = kernel.Get<MyClass>();

        o.Echo("Hello World!"); // Error
        o.Double(5);
        Console.ReadKey(true);
    }

The reason I'm guessing this works is because under the covers it creates a proxy class for `MyClass` and somehow passes in the `IKernel` to the proxy. When you invoke the method (on the proxy) it goes back to the kernel and resolves some additional dependencies (including the `IProxyRequestFactory`). Since you were disposing of it, it was no longer able to resolve that dependency.

Problem

I'm learning to use Ninject and Interceptor pattern. I have the following interceptor. ``` public class MyInterceptor:IInterceptor { public void Intercept(IInvocation invocation) { Console.WriteLine("Pre Execute: " + invocation.Request.Method.Name); foreach (var param in invocation.Request.Arguments) { Console.WriteLine("param : " + param); } invocation.Proceed(); Console.WriteLine("Post Execute: " + invocation.Request.Method.Name); Console.WriteLine("Returned: " + invocation.ReturnValue); } } ``` And have a class named `MyClass` which got nothing but 2 simple methods, virtual to allow the interceptors to work on them. (Two methods are Echo and double, which does what their name says.) I added Ninject, Ninject.Extensions.Interception and Ninject.Extensions.Interception.DynamicProxy to my project via NuGet. Added following `using` statements. ``` using Ninject; using Ninject.Extensions.Interception.Infrastructure.Language; using Ninject.Extensions.Interception; ``` My Main method, which does the bootstrapping looks like this. ``` static void Main(string[] args) { MyClass o = null; using (IKernel kernel = new StandardKernel()) { kernel.Bind<MyClass>().ToSelf().Intercept().With(new MyInterceptor()); o = kernel.Get<MyClass>(); } o.Echo("Hello World!"); // Error o.Double(5); } ``` I'm getting the following error at the specified line. ``` Error loading Ninject component IProxyRequestFactory No such component has been registered in the kernel's component container. Suggestions: 1) If you have created a custom subclass for KernelBase, ensure that you have properly implemented the AddComponents() method. 2) Ensure that you have not removed the component from the container via a call to RemoveAll(). 3) Ensure you have not accidentally created more than one kernel.. ``` Can anyone tell me what I'm doing wrong ?

Original source